41 



That the number of broods produced on Cornus in spring (which 

 must now be inferred) and the time of return migration to grass are yet 

 to be determined. 



That in addition to the migratory winged autumn brood there appears 

 to exist under certain conditions an apterous form which produces a 

 brood of sexual individuals on grass roots the females of which deposit 

 eggs the fate of which is unknown. 



HETEROPTEKA INFESTING GRASS. 

 The Chinch Bug. 



(Blissus lencopterus Say.) 



The Chinch Bug is too well known as a grass and grain pest to need 

 any special mention in this connection. It may be noted, however, that 

 it prefers the annual grasses rather than perennials, and were it con- 

 fined to the noxious Foxtails (Setaria) we might have no reason to 

 complain, but its fondness for Hungarian grass is too conspicuous to 

 pass over. It does not appear to multiply as rapidly in sod land, though 

 I have found it in Blue-grass where this alone could furnish it food. 



The Long Bug. 



(Ischnodemus falicus Say.) 



Were it not for its elongated form this species could be most easily 

 mistaken for the Chinch Bug, for, excepting this peculiarity, it comes 

 nearer in appearance to the Chinch Bug than any of the numerous 

 species which have been confused with that noted pest. 



Hitherto I believe it has not been classed among insects of economic 

 importance. It is, however, quite evidently increasing in numbers in 

 this region and should, I think, be mentioned, at least, in this connec- 

 tion. That it is a grass-feeding insect is evidenced by its abundance in 

 all stages in grass laud where other plants are scarce or wanting, and 

 would be expected of an insect so closely related to the Chinch Bug* I 

 have found it more common in rather low ground, and especially in the 

 wild grasses between upland and bottom-land, or along the borders of 

 sloughs or small streams. 



While only a fall brood of larvge, developing in July and Augustand 

 maturing in September, have as yet been observed, it is probable that, 

 as with the Chinch-Bug, there are two broods each year, adults of che 

 second hibernating and depositing eggs in the spring. 



If multiplying, so as to become a serious pest, I know of no remedies 

 to suggest further than those applicable to Chinch Bugs, and probably 

 the most efficient one would be that of burning dead grass and rubbish 

 in the fall. 



There are several other species of the Heteropterous Hemiptera, nota- 

 bly certain Gapsidce such as Miris affinis and related species, and several 

 species of Lygus, which I suspect will be added to our list of grass pests, 

 but I have as yet made no careful study of their habits. 



